查询词典 compression

In liquids, consists of a sequence of combined elastic deformation and compression waves that travel though the liquid.

在液体中传播时，声波由一个弹性移位和压缩波相结合的序列组成。

Considering that generation and maintain of small radius, high power beam is restricted by the compression ratio of electron gun, the effect of magnetic field on electron trajectories in transition region was analyzed.

分析了过渡区中电子注调节的基本原理，设计了一种渐变式的过渡区结构，其注腰半径为0.8mm，周期均匀磁场峰值为0.29T，周期为4.5mm，压缩比为22。

Considering the electrovalence, the curve of water consumption and the reliability of water supply, this paper respectively sets up the model based on the maximal flux and the model based on the expectation flux. It takes yearly expenditure converting value and yearly cistern converting value as target function and takes continuity equation, velocity of flow and compression resistance of cast iron pipeline as restrictions and sets up the PGA model on optimal design of water supply networks.

考虑到峰谷电价、用水量变化曲线及用水可靠性因素的影响，分别建立了以最高时流量设计管网的模型和以期望时流量设计管网的模型，以年费用折算值加上清水池年造价折算值为目标函数，以连续性方程、管中流速和铸铁管耐压值等为约束条件，进行并行遗传算法对给水管网优化设计的实现。

The paper studies elementally the titanium super plastic deformation at room temperature, including the research work on the rapid compression test,properties,micro-structures etc.

对钛合金室温超塑性行为进行了一些探索研究，其中包括在室温条件下在0。

Dynamic compression occurred almost exclusively (97.5% of the time) in patients with full encasement of the left anterior descending coronary artery, regardless of the presence of overlying muscle.

动态压缩几乎只发生在（97.5%）在冠状动脉左前降支完全包埋的病人，不论存不存在肌肉坏死。

Malfunction of the metallic stent can be caused by encrustation of crystals, bacterial sludge, bile salts, and tumor compression or tumor ingrowth.

金属支架的功能障碍可以由胆管内的结晶凝块，细菌性污泥，胆盐，及肿瘤压迫或肿瘤直接侵入支架。

Whose concrete process is: The queen compression engine electrifying works , already endothermal low pressure , the low temperature gas state refrigerant suck to evaporating the implement inner in, as a result of compressing the queen, the temperature taking form is 55 ~C ~ 58 ~C, the intensity of pressure is 1128 the handkerchief high pressure , high temperature steam , entrance

其具体过程是：通电后压缩机工作，将蒸发器内已吸热的低压、低温气态制冷剂吸入，经压缩后，形成温度为55℃～58℃，压强为1128帕的高压、高温蒸气，进入冷凝器。

The compression artifacts are particularly obvious when a particle (cosmic ray or solar energetic, charged particle) hits the CCD detector on the spacecraft head-on.

当某个粒子（宇宙射线或者太阳活跃的能量，带电粒子等）击打在太空船头部的在CCD探测器之上时，铁压缩物就特别显得明显。

The compression artifacts are particularly obvious when a particle (co**ic ray or solar energetic, charged particle) hits the CCD detector on the spacecraft head-on.

当某个粒子（宇宙射线或者太阳活跃的能量，带电粒子等）击打在太空船头部的在CCD探测器之上时，铁压缩物就特别显得明显。

The influences of the shock thickness and Alfven waves on the particle acceleration by diffusive shock waves are numerically studied through solving one-dimensional diffusive equation including the second-order Fermi effect. It is shown that the spectral index of the energetic particles strongly depends on the shock thickness. For example, the spectral index increases from 2.1 to 3.7 in the low energy range of 3-10 MeV and from 2.5 to 5.0 in the high energy range of 20-60 MeV as the thickness increases. The spectral index decreases from 4.3 to 3.1 as the particle injection energy increases. The spectral index decreases from 4.0 to 1.8 at the quasi-steady stage with the enhancement of the compression ratio from 2 to 4. The results indicate that under the influence of Alfven waves, the energetic particle spectrum at lower energy becomes flat and the spectral index decreases from 2.5 to 0.6 in the low energy range of 3-10 MeV and from 11.6 to 5.0 in the high energy range of 20-60 MeV. At the same time, the rollover energy reaches 19.6 MeV. The spectral index decreases from 5.8 to 2.9 as the energy density of Alfven waves increase. All these results are basically consistent with the theoretical models, as well as the observations of typical energetic particle events.

通过数值求解包含二阶费米加速的一维扩散方程，探讨在准平行激波条件下激波厚度和级联阿尔芬波对粒子加速的影响，研究粒子分布函数的演化与激波厚度和阿尔芬波强度的内禀关系，计算结果表明：(1)考虑激波厚度时，谱指数明显依赖于激波厚度，随着厚度从0.32增大到2.56，低能端(3-10MeV)谱指数逐渐从2.1增加到3.7，高能端(20-60MeV)谱指数从2.4增大到5.0，能谱逐渐变软；当初始注入粒子动量增大1.3倍，质子能谱指数从4.3减小到3.1，且与零厚度激波加速的谱指数差值缩小；厚度不变时，随着压缩比从2增加到4，准稳态分布时低能端(3-10MeV)粒子能谱指数逐渐从4.0减小到1.8谱变硬；(2)在级联阿尔芬波的影响下，随着时间的增大，粒子在低能处(3-10MeV)的谱指数从2.5减小到0.6高能端(20-60MeV)谱指数从11.6减小到5.0，能谱变硬，拐点能量值从7.5MeV增大到为19.6MeV；随着波的能量密度增大，谱指数从5.8减小到2.9，这表明阿尔芬波强度越大，加速效率越高，通过与激波厚度解析结果和高能粒子事件的观测能谱比较发现两者是一致的，说明数值模拟结果是可靠的。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷